WWII 50th Anniversary Action Off Calabria Operation M.A.5 9th July 1940 Signed Commemorative Cover Autographed by Admiral Sir Anthony Griffin GCB - 9th July 1990. 5x7 inches The Battle of Calabria, known to the Italian Navy as the Battle of Punta Stilo, was a naval battle during the Battle of the Mediterranean in the Second World War. Ships of the Italian Regia Marina were opposed by vessels of the British Royal Navy and Royal Australian Navy.